We have the next situation
First, we must find the probability that the first spin lands on blue:
[tex]P=\frac{4}{8}[/tex]
Then, we must find the probability that the second spin lands on gray:
[tex]P=\frac{4}{8}[/tex]
So, te total probabilty is:
[tex]P=\frac{4}{8}\cdot\frac{4}{8}=\frac{16}{64}=\frac{1}{4}[/tex]
